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Finding the Fourth Proportional to 28,503.68, 42,755.49 and 7,727.18

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Solution

The fourth proportional to 28,503.68, 42,755.49 and 7,727.18 is: 11,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,503.68 : 42,755.49 = 7,727.18 : x
  2. Step 2: Convert to fraction form
    28,503.68/42,755.49 = 7,727.18/x
  3. Step 3: Cross multiply
    28,503.68x = 42,755.49 × 7,727.18
  4. Step 4: Simplify right side
    28,503.68x = 330,379,153.44
  5. Step 5: Solve for x
    x = 330,379,153.44/28,503.68
  6. Step 6: Final answer
    x = 11,590.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.